title: Simultaneous determination of liquiritin, hesperidin, and glycyrrhizin by HPLC-photodiode array detection and the anti-inflammatory effect of Pyungwi-san.
abstract: A high-performance liquid chromatographic method was developed and validated to determine liquiritin, hesperidin, and glycyrrhizin levels in a traditional Korean medicine, Pyungwi-san (PWS). Reverse-phase chromatography using a C18 column operating at 40oC, and photodiode array detection at 254 nm and 280 nm, were used for quantification of the three marker components of PWS. The mobile phase using gradient flow consisted of two solvent systems. Solvent A was 1.0% (v/v) aqueous acetic acid and solvent B was acetonitrile with 1.0% (v/v) acetic acid. Calibration curves were acquired with r (2) > 0.9999, and the relative standard deviation values (%) for intra- and inter-day precision were both less than 4.0%. The recovery of each compound was in the range 97.33-110.72%, with an relative standard deviation less than 6.0%. To provide information on the biological activity of PWS, anti-inflammatory action was evaluated. Production of nitric oxide and prostaglandin E(2) were measured using the Griess reagent and enzyme-linked immunosorbent assay, respectively. PWS showed inhibitory effect on prostaglandin E(2) production in LPS-treated RAW 264.7 cells.
authors.affiliation: Herbal Medicine EBM Research Center, Korea Institute of Oriental Medicine, Daejeon, Korea.
authors.forename: Chang Seob
authors.initials: CS
authors.lastname: Seo
authors.forename: Jin-Ah
authors.initials: JA
authors.lastname: Lee
authors.forename: Dayoung
authors.initials: D
authors.lastname: Jung
authors.forename: Ho-Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Jun Kyoung
authors.initials: JK
authors.lastname: Lee
authors.forename: Hyekyung
authors.initials: H
authors.lastname: Ha
authors.forename: Mee-Young
authors.initials: MY
authors.lastname: Lee
authors.forename: Hyeun Kyoo
authors.initials: HK
authors.lastname: Shin
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000494:pharmacology*; D002138:Calibration; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D015232:Dinoprostone / Q000096:biosynthesis; D004353:Drug Evaluation, Preclinical; D044950:Flavanones / Q000032:analysis* / Q000737:chemistry / Q000494:pharmacology; D005960:Glucosides / Q000032:analysis* / Q000737:chemistry / Q000494:pharmacology; D019695:Glycyrrhizic Acid / Q000032:analysis* / Q000737:chemistry / Q000494:pharmacology; D006569:Hesperidin / Q000032:analysis* / Q000737:chemistry / Q000494:pharmacology; D007249:Inflammation / Q000188:drug therapy*; D008297:Male; D055670:Medicine, Korean Traditional; D051379:Mice; D008807:Mice, Inbred BALB C; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology*; D051381:Rats
chemical_list: D000893:Anti-Inflammatory Agents; D044950:Flavanones; D005960:Glucosides; D010936:Plant Extracts; D019695:Glycyrrhizic Acid; D006569:Hesperidin; D015232:Dinoprostone; C512196:liquiritin